/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.shardingsphere.data.pipeline.core.context;
  
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.apache.shardingsphere.infra.instance.metadata.InstanceType;
  
  import java.util.Objects;
  
  /**
   * Pipeline context key.
   */
  @RequiredArgsConstructor
  @Getter
  public final class PipelineContextKey {
      
      private final String databaseName;
      
      private final InstanceType instanceType;
      
      public PipelineContextKey(final InstanceType instanceType) {
          this("", instanceType);
      }
      
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          }
          if (null == o || getClass() != o.getClass()) {
              return false;
          }
          final PipelineContextKey that = (PipelineContextKey) o;
          return instanceType == that.instanceType && Objects.equals(filterDatabaseName(this), filterDatabaseName(that));
      }
      
      private String filterDatabaseName(final PipelineContextKey contextKey) {
          return InstanceType.PROXY == contextKey.getInstanceType() ? "" : contextKey.getDatabaseName();
      }
      
      @Override
      public int hashCode() {
          return Objects.hash(instanceType, filterDatabaseName(this));
      }
  }